Feed device for gin-saw sharpeners



(No Model.) 4 Sheets-Sheet,- l.

W. BEHAN 8; P. FRIENSEHNER.

FEED DEVICE FOR GIN SAW SHARPENB RS. No. 396,800. Patented Jan. 29,1889.

W/T/VE 58.- waltz? 1mm, @ZW I fm aw Arman/Er;

(No Model.)

4 Sheets-Sheet 2. W.-BEHAN & P. PRIENSEHNER.

' FEED DEVICE FOR GIN SAW SHARPBNERS. I No. 396,800.

Patented Jan. 29, 1889*.

A WIN/63858:

ATTORNEY,

s Phowumn n mr. Walhmklun, nj 0.

(No Model.) 4 Sheets-Sheet 3; W. BEHAN & P. FRIENSEHNER.

FEED DEVIGE FOR GIN SAW SHARPBNERS. No. 396,800. Patented Jan. 29, 1889.

I WITNESSES: l/VI/E/VTOR,

wh Z;

ATTORNEY,

N, FEYERS Photo-Lithography, Wauhi nnnnnn .Q

(No Model.) 4 Sheets-Sheet 4.

W. BEHAN & P. FRIENSEHNER.

FEED DEVICE FOR GIN SAW SHARPENERS.

Patented Jan. 29, 1889.

INVENTOH,

0W i I BY Z a/Mun A ATTORNEY aw WIN/8856?! &4

rrn:

YVILLIAM BEHAN AND PAUL FRIENSEHNER, OF TEXARKANA, TEXAS.

FEED DEVICE FOR GIN SAW SHARPENERS.

SPECIFICATION forming part of Letters Patent No. 396,800, dated January29, 1889.

Application filed May 12, 1888.

To all whom it may OOH/0677b:

Be it known that we, \VILLIAM BEHAN and PAUL FRIENSEHNER, of Texarkana,in the county of Bowie and State of Texas, have invented a new anduseful Improvement in Feed Devices for Gin-Saw Sharpeners, of which thefollowing is a specification.

In Patent No. 365,567, granted June 28, 1887, we have shown anddescribed a machine for sharpening the teeth of a gang of ginsaws, andas the saw-filing devices operated upon each tooth the filing devicesthemselves effected the feed of the circular-saw disk so as tointermittently bring a new tooth under the action of the filing devices.There are some objections to this plan of feeding; and our presentinvention is designed to provide a feeding device for the teeth which isindependent of the filing devices, and which shall be so constructedthat it will properly feed the teeth of saws of varying diameters, so asto give a regular and uniform size to each tooth without reference tothe number of teeth in the saw.

Our invention consists in the peculiar construction and arrangement ofthe various parts of the machine, which we will now pro eeed to describewith reference to the drawings, in which Figure 1 is a perspective viewof the sawfiling-machine frame shown in our previous patent, Fig. 1,with our improved feed de vices applied thereto. Fig. is a view of theremote end of the machine, (shown in Fig. 1,)

showing in side elevation the expanding wlieel and operating-gears. Fig.3 is a vertical section through the line y y of Fig. 2. Fig. 4 is avertical section through line a: as of Fig. 1. Fig. 5 is a centralsection through the hub of the expanding wheel; and Figs. 6 and 7 aredetail views, hereinafter referred to.

Referring to Fig. 1, X is the series of ginsaws mounted on shaft Z) andarranged to revolve in bearings in an adjustable frame, Y.

Z is a vertically-adjustable shaft, upon which is mounted and on whichslides the gin-saw-filing devices, (which are not here shown,) all ofwhich devices are, as so far described, substantially as shown in ourprior patent, referred to.

At one end of the gin-saw shaft, and rigidly connected to it so as toturn the series of gin- I collars.

Serial No. 273,727. (No model.)

saws, is an adjustable expanding wheel, A, which is acted upon by feeddevices B to in termittently turn the giirsaws, tooth by tooth. Thesefeed devices are driven. by a shaft, c, placed horizontally above theshaft Z, and this same shaft 6 is also utilized to drive the filingdevices. (Not shown.) The shaft e is held in position by an arm, f, and.has near said arm a gear, g, meshing with a smaller gear, h, on shaft Z,which gear 7). is rigidly attached to a cone-pulley, 1', which revolvesloosely upon shaft Z and is kept in place by The cone-pulley e isconnected by belt f" to a conepulley, j, below, by which the speed ofthe entire machine can be regulated in accordance with the size ofpulley of the main shaft or speed of engine.

The cone-pulleyj is secured to a shaft, Z, onto which are also placed atight and loose pulley, 77L and n, that are belted to the pulley of amain drive-shaft. The shaft Z runs in a box, 0, of a frame, 1), the topof which is shaped so that an upright post, q, can be let int-o a boredhole therefor at r, with a set-screw for adjusting said post q in thesaid seat. This adjustment is necessary when the shaft Z is raised orlowered, since the upright post q connects with the said shaft Z inorder to give a proper support thereto.

The connection of shaft Z and post q is by a collar, 5, the lower partof which is shaped so that the post fits into and is secured to it.

\Ve will now proceed to describe the means whereby the shaft 6 is madeto impart a rotary step-by-step motion to the gin-saws to permit theteeth of the same to be successively filed. On the shaft 17 of thegin-saws is rigidly fixed, by an adjustment hereinafter described, anexpanding wheel, A, having a tire or rim, a. This rim is a flat band ofsteel. which rests upon adjustable feet N, which slide on spokes c andthe ends of the rim a are lapped and secured by slots in the rim andbolts or screws, so that s..id riin, which is elastic and flexible, maybe made to describe a greater or less circumference by adjusting thefeet 11 in or out on the spokes by means of set-screws b. When this rimis set to its adjustment, all the spokes are forced outwardly by acentral tightening device hereinafter described, whereby the rim is heldrigidly on the feet 5 One edge of this rim all the way around isprovided with teeth, notches, projections, imlentations, or otherequally-spaced openings. (See Figl.) Intothese teeth or .notches theremeshes a wormwheel, f This wheel is not constructed with a regularspiral, but has only one portion of its periphery (about one-tenth part)set off from the plane of the rest to give the feed, in order that thefeed may not be continuous, but may be intermittent, taking place onlybetween the acts of filing each tooth. This worm-wheel is rigidly fixedto a short vertical shaft, 9 which turns in a sliding block, 71 and hasa rigid bevel gear-wheel, F, on its upper end. This bevel-gear receivesmot-ion from a bevel-gear, 7' on a horizontal shaft, m at right anglesto f, and this shaft in turn has a bevel-gear, 7.1 that receives motionfrom a bevel-gear, Z on the shaft 6. (Shown in Fig. 1.) It will thus beseen that rotary motion. :is through these gears transmitted to the feedor worm wheel f to give an intermittent rotary motion to the expandingwheel A. This worm-wheel, it will be seen, always occupies a position inone of the notches of the expanding rim, and when not feeding it forwardlocks the rim solid, so that it cannot give to the strain of the filingdevices on the sawteeth, and there is no slack or loose play.

To support the shaft and gears just described, a frame, (1 is provided,which (see Figs. 2 and 3) is made vertically adjustable 011 the mainframe by a slot, 6 and a clamping crank-screw, IF, which enters a plate,0 hung upon bolt (1.

In order to permit the gears to be adjusted to correspond with thedifferent positions of the rim a when adjusted to a larger or smallercircumference, the bevel-gear j is made to slide loosely on shaft m andis connected to it for rigid rotation by a set-screw which enters alongitudinal groove in the shaft of. A corresponding adjustment is givento the worm-wheel by having its bearing 702 fitted with a tenon to slidein a slot, 0 of frame (L2, the bearing being held in place and itsadjustment fixed by set-screws n as shown in Fig. 4.

\Ve will now proceed to describe the means for connecting the expandingwheel A to the gin-saw shaft Z) and the devices for expanding ordistending theouter rim of said wheel to tighten it. (See Fig. 5.) Themain frame or hub 71 of the wheel A is screw-threaded at 7 8, and on thesame is screwed a collar, 7 which is threaded inside and is formed witha conical or tapering external surface. \Vheu this collar is screwedinto the hub, its conical face bearing against the inner ends of thespokes c forces them out evenly all at one time, thus expanding the rimof the wheel and tightening it, so that it works as a positivefeed-wheel. This collar is turned by means of a handle, 7 7, Figs. 2 and5, shaped to correspond with the outer circumference of said collar andadapted to be taken from the latter when not in use by means of a peg,70,

riveted to it and fitting in a socket, 7 5. After the spokes 0" areexpanded sufficiently the taper collar is held from unscrewing by abinding-screw, 81, that runs through a frame, 80, (see Fig. 6,) theupper end of which is split at S-t and pinched together by screw 85.This affords an additional tightening for binding-screw 81, that holdssaid collar firm. The frame 80, Fig. 6, is secured to the main frame ofthe wheel by two of the spoke-screws 82,01? otherwise. Thesespoke-screws bind against the spokes at a grooved or flattened place, rr, Fig. 5, which holds the spokes to place and prevents them fromturning.

'letween each pair of spokes is arranged a spiral spring, 90, Figs. 2and 7, which spring is disposed about a headed screw, 95, that isfastened radially in the hub of the wheel. This spring at one end bearsagainst the head of the screw and at the other end against. two forklike projections, 94:, attached to the spokes, and thus serves to forcethe spokes in-' wardly, or in the reverse direction to the ad justmentgiven them by the tapering collar, and also serves to keep the spokesfrom turn in g.

\Vc will now describe how the expanding wheel is centered upon thevarious gin-saw shafts. \Vithin the hub 7] of the wheel is a clamp, 00,the inner bore of which is as large as the largest-sized shaft ofgin-saws, while split-bushings 61 and 62 serve to adjust it to thesmaller sizes of shaft. The clamp is so shaped that the out-sideperiphery will fit the inner bore of the main frame or wheel-hub, whichis slipped onto the cl amp until its flange 73 bears against the face ofthe clamp to which it is secured by screws 72. This construction andarrangement provide a very simple, rapid, and accurate centering of thewheel without marring the gin-saw shaft.

In making use of our invention we first ascertain how many teeth asaw-disk has that we are to work on, no matter whether it is new orworn, large or small diameter. The number of teeth around the entirecircumference is the same on each saw of a gang. Say the number of teethis two hundred and seventy-five, we would then set our elastic band to275, which would indicate two hundred and seventy-live divisions in theentire circumference. The band is then secured to the wheel, aspreviously described, the feed-disk adjusted to the band, the slidinggear to'the feed-disk for rotation, and we'are ready for work. 'With theband set for two hundred and seventy-five divisions we would work upon asaw-disk that has, or originally had, two hundred and seventy-fiveteeth, which may be regularly or irregularly spaced, or the teeth inpart or all entirely broken out, or a naked disk. Our band set for 27 5would furnish for the filing-n1achine two hundred and sevcmty-fiveequally-spaced divisions for two hundred and seventy-five teeth in onerevolution without attention or mistake and without reference to thediameter or cir'cunr IIO ference of the saws. This adjustable expandingwheel A, therefore, is in the nature of a gear-wheel having a variablenumber of teeth on its periphery to adjust the number of feed movementsin a single revolution to any standard that may be desired. This adj ustable wheel with ti exible expanding toothed rim is an important featureof our invention and maybe used for a variety of analogous purposes.

The advantages which belong to its application for sharpening saws arelightness, great leverage which the wheel. permits to be ex erted, itsfunction as a locking device for the saws while being filed, itsaccuracy, and its universal adaptation to gin-saws of any circumferenceand number of teeth.

Having thus described our invention, what we claim as new is 1. Anexpanding feed-wheel having a flexiblc rim notched or provided withopenings and made adjustable in the direction of its length, for thepurpose of imparting a variable feed, substantially as shown anddescribed.

An expanding feed-wheel consisting of a flexible rim notched or providedwith openlugs and made adjustable in the direction of its length, incombination with a series of radial spokes sustaining said rim, and acentral expandin hub for tightening said spokes and rim, substantiallyas shown and described.

33. An expanding feed-wheel, A, consisting of the combination. of aflexible notched rim,

'a, radial spokes a, with feet Z) for the rim made adj ustable on thespokes, the hub-frame 71, carrying said spokes, and a conical ortapering collar, 7 0, arranged on the hub to bear against the spokes andadjust them outwardi y, substantially as described.

4. The combination, with the expanding feedavheel A, of the clamp (30,with tightening-screw 0-1, and the split-ring bushings (i1 and (32 forcentering the expanding wheel on shafts of different sizes,substantially as described.

5. The combination, with the h ub 71 in the expanding wheel, and theconical collar 7 O, of the tightening-screw 81, the split clampingframe80 for said tightening-screw, and the tightcning-screw 85 for the. splitclampingframe, substantially as and for the purpose described.

The combination, with the adjustable screw-threaded conical collar 70,having socket 75, of the turning-handle 77, having pin 76, for turningsaid collar, substantially as shown and described.

7. The combination, with the spokes in the expanding wheel having forkedprojections 94, projecting toward each other, of the headed screw 95,secured to the hub of the wheel, and a spiral spring, 96, arranged uponthe screw between its head and the forked projections of the spokes toforce the latter in toward the center, substantially as shown anddescribed.

8. The combination of the expanding feed-wheel A, having toothed rim a,the frame a with slot 0 the worn1-wheel f shaft g bearing 7L2, and geari made together adjustable in the slot of the frame a? to correspondwith the size of the feed-wheel, the shaft m having gear-wheel j madeadjustable thereon, and fixed gear-wheel A and the shaft 6, havinggear-wheel Z and connected with the driving mechanism, as described.

9. The combination, with the'main frame Y, and rotary shafts Z and e,having the variable feed devices at one end, of the bracketarm f, gear9, arranged on shaft 6, cone-pulley 2' and gear 71, arranged on shaft Z,vertically- 8o adjustable post q, carrying shaft Z, band i, andcone-pulley j, with shaft and drive-pulleys, substantially as and forthe purpose described.

\YTLTJAM BEHAN. PAUL FRIEN'SEl-INER.

\Vi tn esses:

JEFFERSON 1). SANDERSON, EDWIN LAMBERT.

